Metallized formazan compounds containing a reactive group

ABSTRACT

WHEREIN D is the N-linked radical of a metal complex formazan compound containing a single amino group, n is 1 or 2, and X is the residue of a colorless organic acid containing a cellulosereactive substituent. These compounds provide bright blue or green shades on cellulose textile materials of good fastness to washing or to light. They are notable for the high proportion which fixes on the fibre and for the low degree of staining of adjacent undyed material in washing.   Dyestuffs represented by the general formula:

United States Patent Yelland Dec. 16, I975 METALLIZED FORMAZAN COMPOUNDS CONTAINING A REACTIVE GROUP Michael Yelland, Manchester, England Inventor:

Imperial Chemical Industries Limited, London, England Filed: Aug. 13,1973

Appl. No.: 387,727

Assignee:

Foreign Application Priority Data Aug. 31, 1972 United Kingdom............... 40320/72 [1.8. CI 260/146 T; 260/146 D; 260/149; 260/153; 260/192; 260/193 Int. C09B 62/08; D06P 1/382;

C09B 62/24 Field of Search 260/153, 146 T, 146 D References Cited UNITED STATES PATENTS 12/1962 Beffa et a1. 260/153 X 8/1965 Steinemann 260/153 X 1/1968 Andrew et al. 260/153 X Primary Examiner-Floyd D. Higel Assistant Examiner-C. F. Warren Attorney, Agent, or Firm-Cushman, Darby & Cushman [57] ABSTRACT Dyestuffs represented by the general formula:

6 Claims, No Drawings METALLIZED FORMAZAN COMPOUNDS CONTAINING A REACTIVE GROUP This invention relates to new reactive dyestuffs primarily valuable for the coloring of cellulose textile materials.

According to the invention there are provided dyestuffs represented by the general formula:

N DC' Cit-NH N N NH-X (l) I 3m. Cl

wherein D is the N-linked radical of a metal complex formazan compound containing a single amino group, n is l or 2, and X is the residue of a colorless organic acid containing a cellulose-reactive substituent.-

Preferably D represents a radical of the formula:

X X 2\B wherein A and B are o-phenylene or o-naphthylene radicals, one of X and X is O and the other is CO M is Cu, Ni, Co or Cr, R is an aliphatic radical of l to 4 carbon atoms, or a phenyl or fury] radical, the NH group is attached to a benzene or naphthalene nucleus in A, B or R and the radical contains 1 to 3 sulphonic acid groups.

The radicals A and B can, for example, contain -NH, N Cl, NHCOCl-l 80 N14 or SO l-l as substituents. The radical R when aliphatic can represent an alkyl or alkenyl radical of l to 4 carbon atoms and when phenyl can contain, for example, -NH, N0 CH Cl, OCH or SO H as substituents. Preferably M is Cu.

The preferred dyestuffs are those wherein M is Cu, X is O and X is CO and either A, B and R are each a benzene radical, bearing only SO l-l groups or possibly a Cl atom in addition to X X and the NH radical, or A is a sulphonated naphthylene radical, the other sybmols having the meaning just stated.

As examples of groups represented by X there may be mentioned aliphatic sulphonyl groups which contain a halogen atom or sulphate ester group in B-position to the sulphur atom, e.g. B-sulphatoethylsulphone, 01,3- unsaturated acyl radicals of aliphatic carboxylic acids for example, acrylic acid, a-chloroacrylic acid, propiolic acid, maleic acid and monoand di-chloromaleic acids; also the acyl radicals of acids which contain a substituent which reacts with cellulose in the presence of an alkali, e.g. the radical of a halogenated aliphatic acid such as chloroacetic acid, B-chloro and B-bromopropionic acids and afi-dichloroand dibromo-propionic acids. Other examples are tetrafluoro cyclo butane carbonyl, trifluorocyclo butene carbonyl, tetra- 2 fluorocyclobutyl ethenyl carbonyl, trifluorocyclobuteneethenyl carbonyl and heterocyclic radicals which contain 2 or 3 nitrogen atoms in the heterocyclic ring and at least one cellulose-reactive substituent on a carbon atom of the ring.

As examples of such heterocyclic radicals, there may be mentioned, for example 2:3-dichloro-quinoxaline-5- or -6-sulphonyl, 2:3-dichloro-quinoxaline-5- or -6-carbonyl, 2:4-dichloro-quinazoline-6- or -7-sulphonyl, 2:4:6-trichloro-quinazoline-7- or 8-sulphonyl, 2:4:7- or 2:4:8-trichloro-quinazoline-6-sulphonyl, 2:4-dichloroquinazlline-G-carbonyl, l:4-dichloro-phthalazine-6- carbonyl, 4:5-dichloro-pyridazon-l-yl, 2:4-dichloropyrimidine-S-carbonyl, 1-(phenyl-4-carbonyl)-4:5- dichloro'pyridazone, 1-(phenyl-4'sulphonyl )-4:5- dichloro-pyridazone, and, more particularly s-triazin- 2-yl and pyrimidin-Z-yl or -4-yl radicals which contain on at least one of the remaining 2,4- and 6-positions a bromine, or preferably, a chlorine atom, a sulphonic acid group, a thiocyano group, an aryloxy or arylthio group containing an electronegative substituent such as sulphophenoxy, sulphophenylthio, nitrosulphophenoxy, disulphophenoxy and sulphonaphthoxy, or a group of the formula:

wherein Y' represents a group of atoms necessary to form a 5- or 6-membered heterocyclic ring which may carry substituents or form part of a fused ring system; or a quaternary ammonium or pyridinium group; or a group of the formula:

wherein R and R each represents the same or different alkyl, cycloalkyl, aryl or aralkyl group, or R and R together form, together with the nitrogen atom, a 5- or 6-membered heterocyclic ring", or a group of the formula:

wherein R and R may be the same or different and each represents a hydrogen atom or an alkyl, aryl, or aralkyl group.

In the cases where the pyrimidine ring or triazine ring carries only one such reactive substituent, the said ring may have a non-reactive substituent on the remaining carbon atoms.

By a non-reactive substituent there is meant a group which is bound by a covalent bond to a carbon atom of the triazine or pyrimidine nucleus, which covalent bond is not ruptured under the conditions used for application of the reactive dye. As examples of suchsubstituents, there may be mentioned, for example, primary amino and hydroxyl groups, also monoor di-substituted amino groups, etherified hydroxyl and etherified mercapto groups; in the case of substituted amino groups this class includes, for example, monoand di- 3 4 alkylamino groups in which the alkyl group preferably boxy and curbalkoxy groups in the 5-position of 21 contains at most 4 carbon atoms, and which may also i id l di l Come i h category of nomreaccontain substituents for example. hydroxyl or alkoxy ri subglituents, groups, and phcnylamino and naphthylamino groups Preferably, X is one of the following: B-sulphatoethyl preferably containing sulphonic acid substituents; in 5 sulphonyl, 2,4-dichloropyrimid-6-yl, 2,4,5-trithe case of etherified hydroxyl and mercapto groups, chloropyrimid-o-yl, 2,4dichloropyrirnid-S-ylcarbonyl, this class includes, for example, alkoxy and alkylthio 2,3-dichloroquinoxalin-6-ylcarbonyl, B-chloropropiogroups preferably those of low molecular weight, i.e., nyl or having up to 4 carbon atoms and phenoxy, phenylthio, N naphthoxy or naphthylthio groups; as particular examples of all these classes there may be mentioned, for example, methylamino, ethylamino, dimethylamino, B- N (6) hydroxyethylamino, di-( B-hydroxyethyUamino, B- chloroethylamino, cyclohexylamino, anilino, sulpho- 5 phenylamino, disulphophenylamino, N-methylsulpho- 1 c1 phenylamino, N-fl-hydroxyethylsulphophenylamino, sulpho-o-tolylamino, carboxyphenylamino and sulin which X is Cl, OCH, OCH(CH NH CE CO an IR 3 1m 28 3 II ($0 1!) or (80 B) phocarboxyphenylamino, methoxy, ethoxy, and butin which m is O, l P is l and q is 00? oxy, phenoxy, methylphenoxy, chlorophenoxy and Thus, especially preferred are the dyes of the forphenylthio groups. Chlorine atoms or cyano, nitro, carmula:

0- Cu --o c I 3 HO 8 1| BB 3 u I H N C Z1 HO S 3 O --Cu 0 C I ll NH l l Z} n u wherein one of Q, Y and Z is a cellulose-reactive group of the formula:

NH (l3) wherein D and n have the meanings stated above with the acid chloride or anhydride of a colorless acid containing a cellulose-reactive substituent.

The above process can be conveniently carried out by stirring the reactants in aqueous medium at a temperature from to 80C, preferably maintaining the pH of the medium at from 5 to 7.

As examples of halides or anhydrides of colorless acids which may be used, there may be mentioned, for example, carbyl sulphate and the anhydrides or acid halides of uzB-unsaturated aliphatic acids such as chloromaleic anhydride, propiolyl chloride and acrylyl chloride, the acid chlorides of halogenated aliphatic acids such as chloroacetyl chloride, sulphochloroacetyl chloride, B-bromo and B-chloro-propionyl chloride and azB-dichloroand dibromo-propionyl chlorides, 2,2,3,3-tetrafluorocyclobutane carbonyl chloride, [3- (2,2,3,3-tetrafluorocyclobutyl)acrylyl chloride, 2,3,3- trifluorocyclobut-l-ene carbonyl chloride, B-(2,3,3-trifluoro cyclobut-l-eny)acrylyl chloride, and heterocyclic compounds which contain at least 2 nitrogen atoms in the heterocyclic rings and which contain 2 or more halogen, especially chlorine, atoms in the ortho positions to the nitrogen atoms, such as 2:3- dichloroquinoxaline-S- or 6-carbonyl chlorides, 2:3- dichloro-quinoxaline-S- and 6-sulphonyl chlorides, 2:4- dichloro-quinazoline-(iand 7-sulphonyl chlorides, 2:4:6-trichloro-quinazoline-7- and 8-sulphonyl chlorides, 2:4:7- and 2:4:8-trichloro-quinazoline-6-sulphonyl chlorides, 2:4-dichloro-quinazoline-6-carbonyl chloride, l:4-dichloro-phthalazine-6-carbonyl chloride, 2:4-dichloro-pyrimidine-S-carbonyl chloride, B- (4:S-dichloropyridazonyl-1-)propionyl chloride, l-(4'- chloro-formyl-phenyl )-4:5-dichloro-6-pyridazone, l- 4'-chlorosulphonylphenyl-4:5-dichloro-6-pyridazone, 2:4:6-tribromoand trichloro-pyrimidines, 214:5:6-tetrachloropyrimidine, 5-methyl-2:4:6-trichloropyrimidine, 5-nitro-2.4:o-trichloropyrimidine, 2:4-dichloro-5- nitro-fi-methylpyrimidine, 2:4-dichloro-S-nitropyrimidine, 2:4:6-trichloro-5-cyanopyrimidine, S-ethoxycarbony]-2:4-dichloropyrimidine, 2:4-dichloropyrimidine- S-carbonyl chloride, cyanuric bromide, cyanuric chloride; the primary condensation products of cyanuric bromide or cyanuric chloride with ammonia, an alkali metal sulphite or thiocyanate or a colorless organic mercaptan, hydroxy compound or primary or secondary amine, for example methanol, etha nol, isopropanol, phenol, o-, mand p-chlorophenols, o-, mand pcresols, 0-, mand p-sulphophenols, thiophenol, thioglycollic acid, di-methyldithiocarbamic acid, mercaptobenzthiazole, thioacetamide, methyl-, dimethyl-, ethyl-, diethyl-, n-propyl, isopropyl-, butyl-, hexyland cyclohexylamines, toluidine, piperidine, morpholine, methoxyethylamine, ethanolamine, aminoacetic acid, aniline-2:4-, 2:5- and 3:5-disulphonic acids, orthanilic, metanilic and sulphanilic acids, 2-, 3- and 4-aminobenzoic acids, 4- and 5-sulpho-2-aminobenzoic acids, 4- and 5-sulpho-o-toluidines, S-amino-Z-hydroxybenzoic acid, 2-amino-ethanesulphonic acid, aminonaphthalene monoand disulphonic acids and N- methylaminoethane sulphonic acid; also, the secondary condensation products of cyanuric chloride with alkali metal sulphites, alkali metal thiocyanates, phenols and thiophenols containing an electronegative substituent, and compounds of the formulae:

wherein Y, R, R R and R have the meanings stated above. The amines of formula( 13) can themselves be obtained by condensing together equimolecular proportions of cyanuric chloride, a phenylene diamine monoor di-sulphonic acid and a metal complex formazan compound containing a single amino group.

As examples of phenylene diamine monoand di-sulphonic acids which may be used, there may be mentioned: l,4-diaminobenzene-Z-sulphonic and -2,5- disulphonic acids, l,3'-diaminobenzene-4-sulphonic and -4,6-disulphonic acids.

As examples of formazan compounds which may be used, there may be mentioned, the compounds of the formula:

wherein the symbols R. A, B, X X and M have the meanings stated above.

These compounds may be obtained. eg. a. by coupling a diazotized o-aminophenol or oaminonaphthol with an o-carboxyphenyl or naphthyl hydrazone of an aldehyde of formula R-CHO, one of these reactants containing a single nitro or acylamino and -4,6-disulphonic -acetylaminol -amino-2-naphthol-4-sulphonic acid,

and

6-acetylamino-2-aminol -naphthol-4,8-disulphonic acid.

As examples of aldehydes which may be used there may be mentioned:

acetaldehyde,

propionaldehyde,

nand i-butyraldehyde,

crotonaldehyde,

furfuraldehyde,

benzaldehyde,

2- and 4-methylbenzaldehyde,

mand p-methoxybenzaldehyde,

benzaldehyde-2-, 3- and 4-sulphonic and -2,4-disulphonic acids,

4-amino-2-sulphobenzaldehyde mand p-acetylaminobenzaldehydes,

2- and 4-chlorobenzaldehydes,

2-chloro-5-sulphobenzaldehyde,

2-chloro-4, 5.- and 6-nitrobenzaldehydes,

2,5- and 2,6-dichloro-benzaldehydes,

2,6-dichloro-3-methoxy and 3-nitrobenzaldehydes,

3-methyl-2- and -nitrobenzaldehydes,

oand m-nitrobenzaldehydes,

salicylaldehyde,

2,3,o-trichlorobenzaldehyde.

As examples of phenyl or naphthyl-hydrazines which may be used, there may be mentioned:

2-carboxyphenylhydrazine,

4- and 5-sulpho-2-carboxyphenylhydrazines,

4-nitro-2,S-dicarboxyphenylhydrazine,

4- and 5-chloro-2-carboxyphenylhydrazines,

Z-carboxy-3-naphthylhydrazine,

4-, 5- and 6-nitro-2-carboxyphenylhydrazines,

4- and S-acetylamino-2-carboxyphenylhydrazines,

5-methoxy-Z-carboxyphenylhydrazine,

2,5-dicarboxyphenylhydrazine.

As examples of metal-yielding agents which may be used for forming the metal complexes, there may be mentioned:

copper sulphate,

copper acetate,

nickel sulphate,

chromium acetate,

cobalt chloride.

The invention also provides a process for manufacture of the new dyestuffs which comprises reacting cyanuric chloride with one mole of a metal complex formazan compound containing a single amino group and one mole of a colorless amine of formula:

the symbols n and X having the meanings stated above.

This process can conveniently be carried out by stirring the reactants in aqueous medium at a pH of 5 to 7, adding an acid binding agent to neutralize the hydrochloric acid liberated during the reaction. For replacement of the first chlorine atom it is preferred to carry out the reaction at 20C and for replacement of the second chlorine atom it is preferred to use a temperature of 30-50C. In many cases it is possible to react with the two amines in either order, but if n in the compound of formula (18) is 2 or in the cases where X represents -a dichloro-s-triazine group it is preferable to react the cyanuric chloride first with the amine of formula (l8) and then react the product with the metal complex formazan compound.

The amines of formula (18) can themselves be obtained by reaction of a phenylene diamine monoor disulphonic acid with one molecular proportion of the acid chloride or anhydride of a colorless organic acid containing a cellulose-reactive substituent.

A modification of this process can be used for manufacture of the new dyestuffs in which the cellulosereactive group represented by X is a dichloro-s-triazine group; in the modified process, 1 mole of the phenylene diamine monoor di-sulphonic acid is condensed with 2 moles of cyanuric chloride and the resultant product is then reacted with 1 mole of the metal complex formazan compound.

The invention also provides a process for the manufacture of the dyestuffs in which X represents a 2-striazinyl nucleus containing a chlorine or bromine atom attached to the 4 carbon atom and an amino or substituted amino group attached to the 6 carbon atom which comprises treating a dyestuff of formula (I) in which D and n have the meanings stated above, and X represents a 4,6-dichloroor dibromo-s-triazin-Q-yl group with ammonia or an amine.

This process can conveniently be carried out by stirring the reactants in an aqueous medium at a pH of to 7, and preferably at a temperature of 30 to 50C, adding an acid binding agent to neutralize the hydrochloric acid liberated during the reaction, or alternatively by employing an excess of ammonia or the amine for this purpose.

The dichloroor dibromo-s-triazine dyestuff used may be manufactured by any of the process described hereinbefore. If desired, it may be isolated and purified before further reaction but in general this is not necessary and the ammonia or amine can be added to the reaction mixture in which the dichloroor dibromo-striazine dyestuff has been formed.

The new dyestuffs can be isolated from the reaction mixtures in which they have been formed by the usual techniques adopted for isolation of water-soluble reactive dyestuffs, for example, by salting out and filtration, or by spray-drying the reaction mixture in which the dyestuff has been formed. If desired, stabilizers, e.g. al-

9 kali metal hydrogen phosphates can be added.

The new reactive dyestuffs are valuable for coloring cellulose textile materials, e.g. textile materials com prising natural or regenerated cellulose such as cotton, linen and viscose rayon. For coloring such materials, the new dyestuffs are preferably applied, either by a printing but preferably a dyeing process to the cellulose textile material in conjunction with a treatment with an acid binding agent, e.g. caustic soda, sodium carbonate, silicate or bicarbonate, which may be applied to the material before, during or after the application of the dyestuff. When so applied the new dyestuffs react with the cellulose and yield a wide variety of shades having excellent fastness to washing and to light; the preferred dyestuffs give bright greenish-blue shades. They are notable for the high proportion which fixes on the material especially when applied from saline dyebaths, or when printing, and for the low degree of staining of adjacent undyed material either whilst washing off unfixed dyestuff after printing or during washing 16818.

The invention is illustrated but not limited by the following Examples in which parts are by weight and the ratio w/v is in the ratio of kilogram to litre.

EXAMPLE 1 59.6 Parts of the copper complex of N-(2-hydroxy-5- sulpho-3-aminophenyl )-N 2 '-carboxy-4 '-sulphophenyl)-msphenylformazan (obtained by coupling diazotized 6-acetylamino-2-aminophenol-4-sulphonic acid with the hydrazone from benzaldehyde and 2-carboxyphenylhydrazine-4-sulphonic acid, coppering and hydrolyzing the acetylamino group with dilute caustic soda) are dissolved in 1,000 parts of water at 25C. A solution of 56.4 parts of l,3-bis-(dichlorotriazinyl)- aminobenzene-4,6-disulphonic acid in 1200 parts of water is then added and the mixture is stirred for 3 hours at 25C, maintaining the pH between 5-7 by the addition of 10 percent aqueous sodium carbonate. The solution is then treated with 20 percent w/v sodium chloride and the precipitated product is filtered off and dried at room temperature under vacuum. The dyestuff is found to contain three atoms of hydrolyzable, chlorine per molecule and when applied to cellulosic materials in the presence of an acid binder at 40C, bright blue shades with excellent fastness to light and to washing are obtained.

EXAMPLE 2 A solution of 4 parts of cyanuric chloride in 20 parts of acetone is added to a neutral solution of 3.65 parts of metanilic acid in 60 parts of ice-water. The mixture is stirred at -5C for 2 hours maintaining the pH between -7 by the addition of percent sodium carbonate solution. Residual cyanuric chloride is then screened off and a neutral solution of 4.85 parts of 1,4- diaminobenzene-2,5-disulphonic acid in 30 parts of water is added. The mixture is heated to 3540C for 5 hours maintaining the pH between 5-6 by the addition of 10 percent sodium bicarbonate solution. When the condensation is complete the small excess of 2,4- dichloro-6-(3'-sulphoanilino)-s-triazine is removed by adding 2 parts of ammonia solution (specific gravity 0.880) and stirring at 35-40C for 2 hours. The pH of the mixture is adjusted to 7 by the addition of hydrochloric acid and the mixture is cooled to 0-5C by the addition of ice.

A solution of 3.8 parts of cyanuric chloride in IS parts of acetone is added and the mixture is stirred at 0-5C for 3 hours maintaining the pH between 6-7 by the addition of 10 percent aqueous sodium carbonate. When the condensation is complete residual cyanuric chloride is screened off and a neutral solution of [0.7 parts of the copper complex of N-(2-hydroxy-5-sulpho- 3-aminophenyl)-N'-(2-carboxy-4-sulphophenyl)-msphenylformazan in I00 parts of water is added. The mixture is heated to 35-40 for 2 hours maintaining the pH between 5-7 by the addition of 10 percent sodium carbonate solution. When the condensation is complete the product is isolated by the addition of percent w/v sodium chloride, filtered off and dried. The dyestuff is found to contain two atoms of hydrolyzable chlorine per molecule and when applied to cellulosic materials in the presence of an acid binder at 80C, bright blue shades with excellent fastness to light and to washing are obtained.

EXAMPLE 3 L85 parts of cyanuric chloride are reacted with 1.75 parts of metanilic acid and 1.9 parts of l,3-diaminobenzene-4-sulphonic acid in a similar manner to Example Separately, a solution of 1.9 parts of cyanuric chloride in 10 parts of acetone is added to a neutral solution of 5.7 parts of the copper complex of N-( 2-hydroxy-5- sulpho-3-aminophenyl -N 2 '-carboxy-4 '-sulphophenyl)-ms-phenylformazan in parts of ice-water. The mixture is stirred at 0-5C for 2 hours, maintaining the pH between 5-7 by the addition of 10 percent aqueous sodium carbonate. Unreacted cyanuric chloride is screened off and the filtrate is added to the solution previously prepared from 1,3-diaminobenzene-4- sulphonic acid, cyanuric chloride and metanilic acid. The mixture is heated to 35-40C for 6 hours maintaining the pH between 5-7 by the addition of 10 percent aqueous sodium carbonate. The product is isolated by the addition of 20 percent w/v of sodium chloride, filtered off and dried. The product is found to contain two atoms of hydrolyzable chlorine per molecule and when applied to cellulosic materials in the presence of an acid binder at 80C, bright blue shades with excellent fastness to light and to washing are obtained.

EXAMPLE 4 A solution of 1.9 parts of cyanuric chloride in 10 parts of acetone is added to a neutral solution of 6 parts of the copper complex of N-(2-hydroxy-5-sulpho-3- aminophe nyl )-N 2 '-carboxy-4'-sulphophenyl )-ms- (4-sulphophenyl)-formazan in 70 parts of ice-water. The mixture is stirred at 05C for 1 hour maintaining the pH between 5-7 by the gradual addition of 10 percent sodium carbonate solution. Unreacted cyanuric chloride is screened off and a neutral solution of 1.9 parts of l,3-diaminobenzene-4-sulphonic acid in 15 parts of water is added. The solution is heated to 3540 for 4 hours maintaining the pH between 4-4.5 by the addition of 10 percent sodium carbonate solution. The product is precipitated by the addition of sodium chloride (l5 percent w/v) and filtered off. The filter cake is redissolved in parts of ice-water and a solution of 2 parts of cyanuric chloride in 10 parts of acetone is added. The mixture is stirred at 0-5C for 2 hours maintaining the pH between 6-7 by the addition of 10 percent aqueous sodium carbonate solution. The product is precipitated by the addition of sodium chloride l5 percent w/v) and filtered off. 2 parts of a mixture of 2 parts of potassium dihydrogen oxthophosphate and l part of disodium hydrogen orthophosphate is mixed into the paste and the product is dried at room temperature under vacuum. The dyestuff is found to contain three atoms of hydrolyzable chlorine per molecule and when applied to cellulosic materials in the presence of an acid binder at 40C, bright blue shades with excellent fastness to light and to washing are obtained.

EXAMPLE 5 11.2 parts of the product from Example 4 are dissolved in lOO parts of water and a neutral solution of 1.75 parts of metanilic acid in 15 parts of water is added. The mixture is heated to 35-40C for 3 hours maintaining the pH between 5-7 by the addition of l percent aqueous sodium carbonate. The product in precipitated by the addition of 20 percent w/v sodium chloride, filtered off and dried. The dyestuff is found to contain two atoms of hydrolyzable chlorine per molecule and when applied to cellulosic materials at 80C in the presence of an acid binder bright blue shades of excellent fastness are obtained.

EXAMPLE 6 102.4 Parts of the product from Example I are dissolved in L000 parts of water and a solution 17.3 parts of metanilic acid in 200 parts of water are added. The mixture is heated to 35-40C for 3 hours maintaining the pH between 7 by the addition of percent aqueous sodium carbonate. The product is precipitated by the addition of 20 percent w/v sodium chloride, filtered off and dried. The dyestuff is found to contain two atoms of hydrolyzable chlorine per molecule and when applied to cellulosic materials at 80C in the presence of an acid binder bright blue shades of excellent fastness are obtained.

The following table describes a number of other examples of dyestufi's of the invention, obtained in a similar manner to Example 2 by reacting cyanuric chloride with the amine of column IV and the diamine of column Ill, and reacting a further mole of cyanuric chloride successively with the resultant product and with the compound of column ll. Alternatively the methods of Examples 5 and 6 may be used, condensing cyanuric chloride with the compounds of columns ll and Ill, and finally reacting with the compound of column W.

l ll Ill IV V l The copper complex of N-(Z-hydroxy-S-sulphol,4diaminobenzene- Z-aminotoluene- Blue Z-aminophenyl)-N'-(2'carboxy-4'-sulphophenyl) 2,5-disulphonic acid 4-sulphonic acid ms-phenylformazan 2 Z-aminotoluene- S-sulphonic acid 3 Z-aminmS-sulpho benzoic acid 4 l .3 -diaminobenzene- 4,6-disulphonic acid 5 sulphanilic acid 6 2-aminotoluene- 4-sulphonic acid 7 2-aminotoluene- S-sulphonic acid 8 Z-aminotoluene- 4,5-disulph0nic acid 9 The copper complex of N-(Z-hydroxy-S-sulphol,4-diaminobenzene' metanilic acid Reddish- 3-aminophenyl)-N-(2'-carboxy-4'-sulphophenyl)- 2,5-disulphonic acid blue ms-( Lsulphophenyl )-fo rrnazan l 0 2-aminotoluene 4-sulphonic acid 1 l Z-aminotoluene- S-sulphonic acid I 2 2-amino-5-sulphobenzoic acid 13 lJ-diaminobenzenemetanilic acid 4,6-disulphonic acid l4 Z-aminotoluene- 4-sulphonic acid 15 ammonia 16 The copper complex of N-(2-hydroxy-5-sulphol,4-diaminobenzenemetanilic acid Blue phenyl)-N 2 '-carboxy-4'-arninophenyl )-ms- 2.5 -disulphonic acid 2-sulphophenyl )-form azan l7 Z-aminotoluene- 5 sulphonic acid 18 l.3diaminoben1.ene-

4,6-disulphonic acid 19 metanilic acid 20 The copper complex of N-(2-hydroxy-5-sulphol,4-diaminobenzenemetanilic acid Reddishphenyl)-N-(2'carboxy-4-aminophenyll-ms- 2,5-disulphonic acid blue (4-sulphophenyl )-t'ormazan 2l 2-aminotoluenefi-sulphonic acid 22 Z-aminotoluene- 4'sulphonic acid 2 3 l .S-diaminobenzeneammonia 4.6-disulphonic acid 24 metanilic acid 25 Z-aminotoluene- 5-sulphonic acid 26 The copper complex of N-( 2-hydroxy-5-sulpho l,4-diaminobenzeneammonia phenyl)-N 2'-carboxy-4'-aminophenyl )-ms- 2.5 -disulphonic acid 2 -chloro-5sulphophenyl l-formazan 27 metanilic acid 23 aniline 2-aminotoluene -continued ill IV V

S-sulphonic acid 30 I ,3-diaminobenzeneammonia 4,6-disulphonic acid 31 metanilic acid 32 The copper complex of N-( 2-hydroxy-5-sulphol,4-diaminobenzeneammonia Rcddish- 3-aminophenyl)-N'-(2-carboxy-4'-sulpho- 2,5-disulphunic acid blue phenyl )-n1s 2-chloro-5-sulphophenyl )-forrnazan 33 metanilic acid 34 l .3-diaminobenzeneammonia 4,6-disulphonic acid 35 metanilic acid 36 The copper complex of N-(2-hydroxy-5-sulpho- Blue phenyl)-N'-(2'-carboxy-4'-sulphophenyl)-ms- (4'-aminophenyl H'ormazan 37 The copper complex of N-( 2-hydroxy-3.5- l.4diaminobenzenedisulphophenyl)-N'-(2'-carl oxy-4'-sulpho- 2,5-disulphonic acid phenyl) ms-(4 aminophenyl)-lormazan The copper complex of N-(Z-hydroxy-S-sulpho- 38 phenyl )-N 2 '-carboxy-4 '-sulphophenyl )-ms- (4-amino-2-sulphophenyl)-formazan 39 The copper complex of N-(Zcarboxy-l-amino- !,3-diuminobenzene- Green phenyl N 2'-hydroxy-4',6'-disulpho- 4 ,o disulphonic acid naphth-l '-yl ms-phenyl formazan 40 l ,4 diaminobenzenel-aminobenzene- 2,5-disulphonic acid 2,5-disulphonic acid 4l The copper complex of N-(2-carboxy-4-aminol,4-diaminobenzenel-aminobenzene- Green phenyl)-N'-(2'-hydroXy-4'-sulphonaphth-l'- 2.5-disulphonic acid 2,5-disulphonic yl )-ms-( Z-sulphophenyl )formazan acid 42 The copper complex of N-( 2-carboxy-4-aminol,3-diaminobenzenemetanilic acid Blue phenyl )-N 2 '-hydroxy-3 '-chloro5 '-sulpho- 4,6-disulphonic acid phenyl-ms-( 2-sulphophenyl )formazan 43 l ,4-diaminobenzene- Z-amino-S 2,5-disulph0nic acid sulphobenzoic acid The following Table describes further examples of the invention obtained in a similar manner to Example 2, except that the compound of column IV is used in place of the condensation product of cyanuric chloride 35 and metanilic acid; this compound is condensed with the diamine of column Ill and cyanuric chloride is condensed successively with the resulting product and with the compound of column ll.

Where the compound of column IV is cyanuric chlo- 40 ride, the dyestuff can be made in similar manner to Example 1, i.e. by condensing the diamine of column III with two moles of cyanuric chloride and the resulting product with one mole of the compound of column ll.

The dyestuffs, but preferably Examples 36 to 103 of the table can also be made by the process of Examples 3 and 4 Le. by reacting cyanuric chloride with 1 mole of the compound of column [l and 1 mole of the product obtained by condensing the diamine of column [ll with the compound of column IV; or by condensing the compound of column ll with cyanuric chloride, the product with the diamine of column lll and the resulting product with the compound of column IV.

I U ll Ill W V l The copper complex of N-( 2-hydroxy-5-sulphm l,4-diaminobenzene- 2,4,6-trichloro- Blue 3-aminophenyl)-N'-(2'-carboxy-4' sulpho- 2,5-disulphonic acid pyrimidine phenyl)-ms-phenylformazan 2,4-dichloropyrimidine- S-carbonyl chloride 2,4-dichloro-6- methoxy-sFtriazine 2,4,5,6-tetrachloropyrimidine The copper complex of N-( 2-hydroxy-5-sulpho- 3-amin0phenyl )-N 2'-carboxy'4 "sulpho phenyl )ms-( 4-sulphophenyl )formazan carbyl sulphate 2,3-dichloroquinoxaline 6 carbonyl chloride 2.4.5.6-tetrachloropyrimidine 2 ,4.6-trichloropyrimidine cyanuric chloride 2 ,3-dichloroquinoxaline- Blue fi-carbonyl chloride lA-diaminobenzene- 2,5-disulphonic acid carbyl sulphate l.3-diaminobenzenecyanuric chloride 4.6-disulphonic acid 2,4-dichloropyrimidine- S-carbonyl chloride 2.3-dichloroquinoxaline- 6-carbonyl chloride cyanuric chloride l,4-dinminobenzene 2.5-disulp honic acid .5.fi-tetrachloro pyrimidine carbyl sulphate -continued I U II III IV V l '-yl)-n1s-( 4-sulphophenyl )-formazan anilino )-s-triazine 96 l,4-diaminobenzene- 2,4-dichloro-6-( 2 ,5

Z-sulphonic acid disuIphoanilino)-striazine 97 The copper complex of N-( 2-carboxy-4-aminol.3-diaminobenzenecyanuric chloride phenyl)-N'-(2' hydroxy-4'-sulphonaphth-l- 4-sulphonic acid yl )ms-( 2-sulphophenyl )-formazun 98 2,4-dichloro-6-(2',S'-

disulphoanilino )-striazine 99 The copper complex of N-(2-carboxy-4-aminol.4-diaminobenzene- 2,4-dichloro-6-(2',5- Green phenyl)-N'-(2-hydroxy-4'-sulphonaphth-l 2-sulphonic acid disulphoanilino)-syl )-ms-( Z-sulphophenyl )-formazan triazine I The copper complex of N-(2-carboxy-4-amino- Blue phenyl )N 2 '-hydroxy-3'-chloro-S '-sulphophenyl )-ms-( 2,4-disulphophenyl )-formazan lOl l,3-diaminobenzene- 2,4-dichloro-6-( 2'- 4-sulph0nic acid methyl-5'-sulphoanilino )-s-triazine I02 cyanuric chloride 03 I, 2,4,5,6tetrachloropyrimidine Referring to the second table, many of the dyestuffs 1-10 5 y can also be made as in Example 5 or Example 6; the di- NH amine of column III is reacted with 2 moles of cyanuric I I chloride and the product successively with the com- L N pound of column [I and the appropriate amine; or cyanuric chloride is condensed with the compound of column I] and the diamine of column II and the product is condensed with cyanuric chloride and the appropriate amine. The amines used are as follows:

Amine Examples metanilic acid 33. 34, 46, $4. 58. 70, 77, z

aniline-2.5-disulphonic acid 4-sulpho-2-carboxyaniline S-sulpho-2-carboxyaniline 2-methyl-4,S-disulphoaniline wherein one of Q, Y and Z is ammonia 42, 52. 56, 72. 83 87 N S-sulpho-Z-methylaniline 43, 47, 67, 95, lOl aniline 57, 80,94 40 "NH'C C NH 4-sulpho-2-methylaniline 93 l NH"X C o a We claim: (a 3 )n l. A dyestutf having the formula c1 0 wherein n is l or 2 and X is B-sulphatoethylsulphonyl, 2,4-dichloropyrimicl-fi-yl, 2,4,5-trichloropyrimid-6-yl, 2,4-dichloropyrimid-5-yl carbonyl, 2,3- 0 Y dichloroquinoxalin-fi-yl carbonyl, B-chloropropionyl or HO 5 N N 1 3 u j X C N N clz 21 Cl 2 z or wherein X is Cl, OCH OCH (Cl-l b, NH2,

-NH NH 21 22 wherein m is O, l or 2, p is l or 2 and q is O or l,Q othnickel, cobalt or chromium. erWiSe being C1 3 Y Otherwise being 3 2. The dyestuff of claim 1 wherein Me is copper. and Z Otherwise being H or 3 is H, Cl 0T a 3. A dyestuff as claimed in claim 1 having the for- Z is H or SO H, Z is H or SO H and Me is copper, mula;

If N HO S 5 WC R I21 s L I 1m BO 3s C0 Cu-i i mi N I I SO H l l 3 N 4. A dyestuff as claimed in claim 1 having the formula:

N N 5035 N I /c NE "m l l (3 CO Cu-O $0 3 0 I l so l I Cl n L 13 5. A dyestuff as claimed in claim 1 having the for mula:

c1 30 H j 3 H0 5 N \l N x I! L n 4 NH no s N 4/ 3 C0 Cu -O i: la 3 mula: 

1. A DYESTUFF HAVING THE FORMULA
 2. The dyestuff of claim 1 wherein Me is copper.
 3. A dyestuff as claimed in claim 1 having the formula:
 4. A dyestuff as claimed in claim 1 having the formula:
 5. A dyestuff as claimed in claim 1 having the formula:
 6. A dyestuff as claimed in claim 1 having the formula: 